请教一道数学题

xrbear57 · 发表于 2010-2-1 15:36:33

Q30:
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1)    She bought $4.40 worth of stamps.
(2)    She bought an equal number of $0.15 stamps and $0.29 stamps.

我选的是A，因为0.15X+0.29Y=4.4只有一种整数解，X=Y=10
但是答案是D，我百思不得其解...

望高人指点！谢谢！

liying731 · 发表于 2010-2-1 15:49:05

这一题是选A啊

xrbear57 · 发表于 2010-2-1 15:50:10

我也觉得是答案错了，但是我怕这题目有什么我没考虑到的地方...

请教一道数学题

所属分类: GMAT考试

正在浏览此版块的会员 ()